Update notes for submitted changes

* Test: use local configuration file
Update notes for submitted changes

* Unify DNSManager.add interface
Update notes for submitted changes

* models: drop nametype_index
Update notes for submitted changes

* Introducing InstanceManager
* Improved exception handling
* Fix creation of NS record for Altai zones
* Added 'sync' API call and method stub to InstanceManager
* Simple instance manager: don't add duplicated records for instances
* Version bump
* Add utility to sync DNS database with actual state
* Introduce exception classes
* Improve instance deletion
* auth: Fix admin role detection
* Add dns_zone_address option
* Initial implementation of synchronization zones with nova